<template>
  <div>
    <!-- 面包屑区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <!-- 警告区域 -->
      <el-alert
        show-icon
        title="注意！只允许为三级分类设置相关参数"
        type="warning"
        :closable="false"
      ></el-alert>
      <!-- 商品分类区域 -->
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类:</span>
          <!-- 选择商品分类的级联选择框 -->
          <!-- 级联选择框 -->
          <el-cascader
            expand-trigger="hover"
            v-model="selectedCateKeys"
            :options="cateList"
            :props="cateProps"
            @change="handleChanged"
            clearable
          >
          </el-cascader>
        </el-col>
      </el-row>
      <!-- tab栏 -->
      <el-tabs v-model="activeName" @tab-click="handleClick">
        <!-- 动态参数面板 -->
        <el-tab-pane label="动态参数" name="many">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addDialogVisible = true"
            >添加参数</el-button
          >
          <!-- 动态参数表格 -->
          <el-table :data="manyTableData" border stripe>
            <!-- 展开行 -->
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleCLose(i,scope.row)">{{item}}</el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column
              label="参数名称"
              prop="attr_name"
            ></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" size="mini" icon="el-icon-edit"
                @click="showEditDialog(scope.row.attr_id)"
                  >编辑</el-button
                >
                <el-button type="danger" size="mini" icon="el-icon-delete"
                @click="removeParams(scope.row.attr_id)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>



        <!-- 静态属性面板 -->
        <el-tab-pane label="静态属性" name="only">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addDialogVisible = true"
            >添加属性</el-button
          >
          <!-- 静态属性表格 -->
          <el-table :data="onlyTableData" border stripe>
            <!-- 展开行 -->
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleCLose(i,scope.row)">{{item}}</el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column
              label="属性名称"
              prop="attr_name"
            ></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" size="mini" icon="el-icon-edit"
                @click="showEditDialog(scope.row.attr_id)"
                  >编辑</el-button
                >
                <el-button type="danger" size="mini" icon="el-icon-delete"
                @click="removeParams(scope.row.attr_id)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <!-- 添加静态动态通用对话框 -->
    
    <el-dialog
      :title="'添加' + titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <el-form
        ref="addFormRef"
        :model="addForm"
        label-width="120px"
        :rules="addFormRules"
      >
        <el-form-item :label="titleText + '名称'" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
    </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button
        >
      </span>
    </el-dialog>

    <!-- 编辑对话框 -->
    <el-dialog
      :title="'编辑' + titleText"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        ref="editFormRef"
        :model="editForm"
        label-width="120px"
        :rules="editFormRules"
      >
        <el-form-item :label="titleText + '名称'" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
    </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button
        >
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data() {
    return {
      cateList: [],
      cateProps: {
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      selectedCateKeys: [],
      activeName: "many",
      manyTableData: [],
      onlyTableData: [],
      addDialogVisible: false,
      addForm: {
        attr_name: "",

      },
      addFormRules: {
        attr_name:[
          { required: true, message: "请输入参数名称", trigger: "blur" },
        ],
      },
      editDialogVisible:false,
      editForm:{
          attr_name:'',
      },
      editFormRules:{
          attr_name:[
              {required:true,message:'请输入参数',trigger:'blur'}
          ]
      },
      

    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200)
        this.$message.error("获取商品分类列表失败！");
      this.$message.success("获取商品分类成功！");
      this.cateList = res.data;
      console.log(this.cateList);
    },
    handleChanged() {
      this.getParamsData();
    },
    handleClick() {
      console.log(this.activeName);
      this.getParamsData();
    },
    async getParamsData() {
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = [];
        this.manyTableData=[]
        this.onlyTableData=[]
        return;
      }
      console.log(this.selectedCateKeys);
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        {
          params: { sel: this.activeName },
        }
      );
      if (res.meta.status !== 200) {
        this.$message.error("获取所选参数失败!");
      }
      console.log(res.data);
      res.data.forEach(item =>{
        item.attr_vals = item.attr_vals? item.attr_vals.split(','):[]
        item.inputVisible= false
        item.inputValue= ''
      })
      
      console.log(res.data);
      if (this.activeName === "many") {
        this.manyTableData = res.data;
      } else {
        this.onlyTableData = res.data;
      }


    },
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    addParams(){
        this.$refs.addFormRef.validate(async valid=>{
            if(!valid) return 
            const {data:res} = await this.$http.post(`categories/${this.cateId}/attributes`,{
                attr_name:this.addForm.attr_name,
                attr_sel:this.activeName
            })
            if(res.meta.status!==201){
                return this.$message.error('添加参数失败!')
            }
            this.$message.success('添加参数成功!')
            this.addDialogVisible = false
            this.getParamsData()
        })
    },
    async showEditDialog(attr_id){
        const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,{
            params:{attr_sel:this.activeName}
        })
        if(res.meta.status!==200) return this.$message.error('获取参数失败!')
        this.editForm = res.data
        console.log(this.editForm)
        this.editDialogVisible = true
    },
    editDialogClosed(){
        this.$refs.editFormRef.resetFields()
    },
    editParams(){
        this.$refs.editFormRef.validate(async valid=>{
            if(!valid) return 
            const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
            {
                attr_name:this.editForm.attr_name,
                attr_sel:this.activeName,
                attr_val:this.editForm.attr_vals
            })
            if(res.meta.status!==200) return this.$message.error('编辑参数失败!')
            this.$message.success('修改参数成功!')
            this.getParamsData()
            this.editDialogVisible = false
        })
    },
    async removeParams(attr_id){
      const confirmResult = await this.$confirm(
        '该操作会永久删除该参数，是否继续？',
        '提示',
        {
          confirmButtonText:'确定',
          cancelButtonText:'取消',
          type:"warning"
        }
      ).catch(err=>err)
      if(confirmResult==='cancel') {
        return this.$message.info('取消删除')
      }
      const {data:res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
      if(res.meta.status!==200)return this.$message.error('删除参数失败！')
      this.$message.success('删除参数成功！')
      this.getParamsData()
    },
    async handleInputConfirm(row){
      row.inputVisible =false
      if(row.inputValue.length === 0){
        row.inputVisible = false
        row.inputValue=''
      }
      row.attr_vals.push(row.inputValue.trim())
      row.inputValue=''
      row.inputVisible=false  
      this.saveAttrVals(row)
    },
    showInput(row){
      row.inputVisible = true
      this.$nextTick(_=>{
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    handleCLose(i,row){
      row.attr_vals.splice(i,1)
      this.saveAttrVals(row)
    },
    async saveAttrVals(row){
      const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,{
        attr_name:row.attr_name,
        attr_sel:row.attr_sel,
        attr_vals:row.attr_vals.join(',')
      })
      if(res.meta.status!==200){
        return this.$message.error('保存失败！')
      }
      this.$message.success('保存成功！')
    }

  },
  computed: {
    isBtnDisabled() {
      if (this.selectedCateKeys.length !== 3) {
        return true;
      }
      return false;
    },
    cateId() {
      if (this.selectedCateKeys.length === 3) {
        return this.selectedCateKeys[2];
      }
      return null;
    },
    titleText() {
      if (this.activeName === "only") {
        return "静态属性";
      } else {
        return "动态参数";
      }
    },
    
  },
};
</script>

<style scoped>
.cat_opt {
  margin-top: 16px;
}
.el-cascader {
  margin-left: 16px;
  width: 300px;
}
.el-tag{
  margin: 16px;
}
.input-new-tag{
  width: 120px;
}
</style>